Years ago the same rumor was floating around about WW 231.
This was in the infancy of the pre-internet; I was part of the Compusere Firearms Forum, and that's where the rumor was spreading.
I was working for American Rifleman at the time, so I called up the PR guy for the Winchester powder division and asked him flat out -- is 231 being discontinued, I'm seeing people swearing that they have it "first hand" from X or Y.
He started to laugh and said something to the effect of it being the one powder they'd never discontinue.
I told him I was very happy to hear that because I absolutely loved 231.
A few weeks later I got a package from him with a 3 pound tin of 231 and an accompanying 3 pound tin of 296.
I finished the 231 a couple of years ago, but I'm still working on the 296.
And 231 is STILL my favorite go to powder for about 90% of my handloading.